Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Structural characteristics of ZnO nanostructures synthesized by the thermal evaporation method

열증착법으로 합성된 ZnO 나노 구조체의 구조적 특성

  • Bang, Sin-Young (Division of Materials Science and Engineering, Hanyang University) ;
  • Kim, Woo-Sik (Departemnt of Nanotechnology, Hanyang University) ;
  • Chung, Jun-Ho (Division of Materials Science and Engineering, Hanyang University) ;
  • Choi, Bong-Geun (Division of Materials Science and Engineering, Hanyang University) ;
  • Shim, Kwang-Bo (Division of Materials Science and Engineering, Hanyang University)
  • Published : 2008.04.30
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Abstract

ZnO nanowires were synthesized by the thermal evaporation method and their growth mechanisms were confirmed by the characterization of the structural features depending on the growth conditions. The increase of vaporization temperature accelerates the growth rate and morphologies of ZnO nanowires were drastically changed at the temperature over 1000$^{\circ}C$, because of changed $CO/CO_2$ partial pressure. Au particles play their role on growth of ZnO nanowire as catalyst at growth temperature over 700$^{\circ}C$. The synthesized ZnO nanowires exhibit blue emission at 380 nm.

열증착법(thermal evaporation method)에 의해 ZnO 나노선을 합성하였다. 나노선 합성조건에 따른 구조적 특성을 분석하여 그 합성 메카니즘을 확인하였다. ZnO 나노선 합성 시 기화 온도가 고온일수록 성장속도가 빠르고 $CO/CO_2$ 분압이 역전되는 1000$^{\circ}C$ 이상에서는 그 형태가 크게 변화하고, 성장온도 700$^{\circ}C$ 이상에서 Au 촉매가 그 기능을 하고 있음을 확인하였다. 성장된 ZnO 나노선은 380 nm에서의 blue emission을 나타냄을 확인하였다.

Keywords

References

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